Flexible container



FIG. 1 is a front, elevational view of the flexible container design of my invention;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a left side view thereof, the right side of which is a mirror image thereto; and,

FIG. 4 is a top plan view thereof. 

The ornamental design for a flexible container, as shown and described. 